annelid: Quick Facts

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Facts

Also Known As	segmented worm • Annelida

Photos

structure of polychaetes

Diagram of an earthworm showing its nervous system, including labeled parts such as the cerebral ganglia, mouth, circumoesophageal connective, subesophageal ganglion, and ventral nerve cord, with an inset of the whole earthworm body.

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Topics

Capitellida leech polychaete oligochaete Archiannelida Chaetopterida Cirratulida Cossurida Ctenodrilida Eunicida heteropteran Coleoptera echinoderm crustacean Diptera sponge flatworm cnidarian arthropod mollusk

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